package com.sren.boot.servlet;

import javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author: renshuai
 * @date: 2019/11/23 上午8:45
 * @Description: webServlet的方式实现
 */

@WebServlet(urlPatterns = "/servlet", asyncSupported = true)
public class MyServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		AsyncContext asyncContext = req.startAsync();
		asyncContext.start(()->{
			try {
				resp.getWriter().println("hello world");
				// 触发完成
				asyncContext.complete();
			} catch (IOException e) {
				e.printStackTrace();
			}
		});
	}
}
